Cosmetics Formulation Development

hi, I want to make night serum and day serum. It is important that the day serum is not too heavy, and it can be used with light makeup. The formulation is for normal skin with fine wrinkles with skin . Right now feel good with the Ordinary's Buffet but not helping with reducing fine wrinkles. Please also advise if any ingredients in these % may clog up pores. Night serum: Water: 52% , : 3% : 3% (SkinTight) Liquid: 5% 99.5%: 5% : (*1) : 2% (*1) : 3% : 2 % : 3% (*2) : 3% : 3% : 2% : 1% : 1% *1: any advantage of using both? I prefer to choose one, please advise. *2: Do you recommend any other products which contain ? Day Serum Water: 73% : 2% :2% : 5% , ( :5% : 3% : 5% : 1% : 1% : 1% : 2% : 1% Another question: I am interested in making a separate serum for freckles to be applied before using night serum. what would be the formula with the most simple formulation with as few ingredients as possible?

Hi, All chosen ingredients are water-soluble so they will not clog pores. (*1) : 2% (*1) : 3% *1: any advantage of using both? I prefer to choose one, please advise. they are quite different ingredient but your formulation already have many ingredients so choosing just one from these two will not produce much different result. *2: Do you recommend any other products which contain ? some other ingredients that also contain s are such as which is designed for lengthening the eye lash so it won't be suitable for this facial formulation. Another question: I am interested in making a separate serum for freckles to be applied before using night serum. what would be the formula with the most simple formulation with as few ingredients as possible? you may choose 2-3 ingredients adding into any serum base.

Thank you. in general, can I use 1,3- (Natural)+ in both of these formulas instead of , or would that not work? are there already enough moisturing products in these formula so that 1,3- (Natural) / combination is not necessary? I do not want the serum (especially day serum) to be too sticky as I want to use it as a make-up base.

in general, can I use 1,3- (Natural)+ in both of these formulas instead of , or would that not work? they are totally different function. emulsifies and thickens the formulation, whereas or are humectants (among other secondary functions).

hi could you take a look at new formulas, the night serum contains now. I removed s from the night serum and add to day serum because of . 1. can you recommend which products can be added to day serum which are ok with s? 2. in the day serum, do I need ? 3. is in both formula necessary? not sure how thickening other products are. [Night serum] Water 10% , (eq ) ( ) Liquid 5% 99.5% 2 % 3% 9 ) 3% 0.2% 2% 3% 3% 3% 2% 10% 1% ? 1% [ Day serum] Water Pietera Ex 2% 2% 5% , ( ) 5% 3% 5% 3% 1% 2% 1% ? 1% [ ?] [ or other humectant?] doesn't have compatibility issue with any agent as long as the pH of the finished product is in suitable range.

Hi, Both formulations are fine. will help stabilize the formulation as it contains electrolytic ingredient such as . We suggest that you adjust the concentration (%) of these that matches the viscosity that you prefer (probably add it in the last step little-by-little until have the texture that you want). can be adjusted down to 1.5% if you have (or other ) in the formulation.